Mini-dollar (WDOZ26): US CPI and Copom minutes dictate the course of the day

The headline reports that the Brazilian mini-dollar futures contract (WDOZ26, the October 2026 expiry) is expected to be driven during the session by two events: the release of US consumer price index data and the minutes of the Central Bank of Brazil's monetary policy committee (Copom). The transmission runs through the interest rate differential and inflation repricing: a hotter-than-expected US CPI print tends to lift US Treasury yields and the dollar globally, while Copom minutes shape expectations for the Selic rate path and therefore the real yield available to foreign carry investors in Brazil. Brazilian assets most exposed are the BRL-denominated currency pair itself, domestic interest rate futures, and the Ibovespa, given that dollar-real moves feed directly into equity sentiment and foreign capital flows. The most important catalyst to watch is the US CPI figure relative to consensus forecasts, since a deviation from expectations would set the tone for US yields and, by extension, the dollar-real exchange rate before the Copom minutes are digested.

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